Analysis of the causes and solutions of female infertility Female infertility refers to the inability of women to become pregnant within the normal reproductive age (20-45 years old). Infertility is one of the common diseases that cause female infertility. There are many causes of female infertility. The following will analyze it from four aspects: physiology, psychology, environment and diet, and propose corresponding solutions. 1. Physiological causes Physiological factors cause female infertility